#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define SLEN 81


struct namect {
    char * fname;
    char * lname;
    int letters;
};

void getinfo(struct namect *);

void makeinfo(struct namect *);

void showinfo(const struct namect *);

void cleanup(struct namect* );

char *s_gets(char *st, int n);

int main() {
    struct namect person;

    getinfo(&person);
    makeinfo(&person);
    showinfo(&person);
    cleanup(&person);

    return 0;
}
void getinfo(struct namect * pst){
    char temp[SLEN];
    printf("Please enter your first name.\n");
    s_gets(temp,SLEN);
    pst->fname =(char *) malloc(strlen(temp)+1);
    strcpy(pst->fname,temp);
    printf("Please enter your last name.\n");
    s_gets(temp,SLEN);
    pst->lname =(char *) malloc(strlen(temp) + 1);
    strcpy(pst->lname,temp);
}

void makeinfo(struct namect * pst){
    pst->letters = strlen(pst->fname)+ strlen(pst->lname);
}

void showinfo(const struct namect * pst){
    printf("%s %s, your name contains %d letters.\n", pst->fname, pst->lname, pst->letters);
}

void cleanup(struct namect * pst){
    free(pst->fname);
    free(pst->lname);
}

char *s_gets(char *st, int n) {
    char *ret_val;
    char *find;

    ret_val = fgets(st, n, stdin);
    if (ret_val) {
        find = strchr(st, '\n'); // 查找换行符
        if (find)
            *find = '\0';
        else
            while (getchar() != '\n')
                continue;
    }
    return ret_val;
}